UNABLE TO MERGE BANK ACCOUNTS WHEN BOTH ACCOUNTS HAVE ON LINE DATA IN THEM. ACCIDENTALLY CREATED TWO CHECKING ACCOUNTS AND TWO SAVINGS ACCOUNTS WHEN USING BANK FEED.

Let me help you merge your bank accounts, LEROY3. 

If you get a message that says “You cannot merge an account that has online information associated with it into another account”, you have an active bank feed on one of the accounts. We'll need to turn off the bank feeds of one of the accounts. Here's how:

1. Go to Lists and then select Chart of Accounts.
2. Right-click the account you want to deactivate. Then select Edit Account.
3. Go to the Bank Settings tab.
4. Select Deactivate all online services and then OK to confirm.
5. Press Save & Close.

Please take note that merging two accounts will combine all transactions into one account. Here's how to merge these accounts: 

1. Click Accountant on the menu.
2. Select Chart of Accounts.
3. Take note of the name of the account that you'd like to keep.
4. Right-click the name of the account that you want to merge, then select Edit Account.
5. Replace the account name with the one you want to keep, then select Save & Close.
6. A prompt will appear, select Yes to merge the account. 

I'll add this article as your reference in merging information in QuickBooks Desktop, including vendors and customers: Merge Accounts, Customers, and Vendors. Also, you can refer to this article when you add and match transactions: Add and match Bank Feed transactions in QuickBooks Desktop.

I'd like to know how you get on after trying the steps as I want to ensure this is resolved for you. Feel free to reply to this post and I'll get back to you. You have a good one.